A delivery catheter for delivery, then photo-activation of photo sensitive material has a photo-sensitive substance-delivery part and an activation part. The content management system takes complex hierarchically represented content structures and represents the hierarchical model by way of a relational model that creates node tables and edge tables to represent various content structures. Foveal coefficients are computed with one-dimensional inner products along trajectories of an n-directional trajectory list. Each of the data processing units is notified of a range of IDs that the data processing unit handles, among the list of IDs stored in the primary database, and, when acquiring a packet containing an ID that lies within the range of IDs, the data processing unit processes the packet. The method further includes irradiating the at least one pulse having the at least one determined characteristic into a spot on the predetermined microstructure.